Asymbiotic nitrogen-fixing bacteria and their nitrogen fixation potential

doi:10.13343/j.cnki.wsxb.20210697

Home > Archive>Volume 62, Issue 8, 2022 >2861-2878. DOI:10.13343/j.cnki.wsxb.20210697

Asymbiotic nitrogen-fixing bacteria and their nitrogen fixation potential
DOI:
                        10.13343/j.cnki.wsxb.20210697
                    
CSTR:
                        32112.14.j.AMS.20210697
                    
Author:
                        WANG JialongWANG Jialong
Engineering Research Center of Soil Remediation of Fujian Province University, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
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LIU ChiLIU Chi
Engineering Research Center of Soil Remediation of Fujian Province University, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
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LEI LiLEI Li
Engineering Research Center of Soil Remediation of Fujian Province University, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
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LI XiangzhenLI Xiangzhen
Key Laboratory of Environmental and Applied Microbiology, Sichuan Key Laboratory of Environmental Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
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YAO MinjieYAO Minjie
Engineering Research Center of Soil Remediation of Fujian Province University, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
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Abstract:

Biological nitrogen fixation is an important N source to ecosystems, and nitrogen-fixing microorganisms play important roles in plant growth and development. Compared with symbiotic nitrogen-fixing microorganisms, asymbiotic nitrogen-fixing microorganisms are more widely distributed and more diverse, and they are of significance to the nitrogen cycle in the global ecosystem. In this review, the classification, phylogeny and community assembly of asymbiotic nitrogen-fixing bacteria were summarized. We compared the differences of asymbiotic nitrogen-fixing bacterial compositions and their nitrogen-fixing potential in different ecosystems (such as grassland, forest, ocean, farmland, etc.) and different parts of plants (such as canopy, phyllosphere, rhizosphere, endosphere, litter, etc.). The main factors affecting the community structure and nitrogen-fixing potential of asymbiotic nitrogen-fixing bacteria include climatic factors, soil properties and artificial measures. The frequently-used methods for studying asymbiotic nitrogen-fixing bacteria and their nitrogen-fixing potential were also summarized.

Key words:asymbiotic nitrogen fixation;diazotrophs;community assembly;phylogeny;nitrogen-fixing potential

Reference

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WANG Jialong, LIU Chi, LEI Li, LI Xiangzhen, YAO Minjie. Asymbiotic nitrogen-fixing bacteria and their nitrogen fixation potential. [J]. Acta Microbiologica Sinica, 2022, 62(8): 2861-2878

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Received:November 14,2021
Revised:January 27,2022
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Online: August 16,2022
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